I
would've guessed candy or liquor, but no. The most frequently stolen food
on Earth is actually cheese:

Almost four percent of the world's cheese supply ends up stolen,
putting cheese ahead of other frequent grocery targets like candy and
alcohol. Shoplifting rates as a whole are going up, because, hey, times
are tough. "For the past six months, [retailers] have been affected
by bad news—economic slow down, government cuts and now an increase
in shoplifting," one retail analyst told
Sky News.